fix: Walkfunc should check the err

[j4ckstraw]

Signed-off-by: j4ckstraw j4ckstraw@foxmail.com

Ⅰ. Describe what this PR does

Ⅱ. Does this pull request fix one issue?

fix #459

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[j4ckstraw]

fix #459

[codecov]

Codecov Report

Merging #460 (420dc65) into main (aaead0f) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #460      +/-   ##
==========================================
- Coverage   67.97%   67.95%   -0.03%     
==========================================
  Files         155      155              
  Lines       16576    16579       +3     
==========================================
- Hits        11268    11266       -2     
- Misses       4474     4478       +4     
- Partials      834      835       +1     

Flag	Coverage Δ
unittests	67.95% <0.00%> (-0.03%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/koordlet/resmanager/cpu_suppress.go	72.34% <0.00%> (-0.59%)	⬇️
pkg/util/httputil/reverseproxy.go	84.84% <0.00%> (-0.54%)	⬇️

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[saintube]

@j4ckstraw Could you please add a unit test for this fix?

[j4ckstraw]

@j4ckstraw Could you please add a unit test for this fix?

Let me try

[jasonliu747]

@j4ckstraw any progress with this PR?

[j4ckstraw]

@j4ckstraw any progress with this PR?

sorry, I am busy recently.

BYW, Is it really need a test?

[jasonliu747]

BYW, Is it really need a test?

Actually no, but we would love to see the code coverage getting higher. We can still merge this PR if you want, it's your call, please let me know.

[saintube]

@j4ckstraw any progress with this PR?

sorry, I am busy recently.

BYW, Is it really need a test?

We will appreciate it if you can make a testable patch and help us avoid regression.

[j4ckstraw]

I have a problem when try to write a test for this function.

I know that if the path which stat call is not found, the Walk function will return error.
BUT rootCgroupPath is checked before walk, so I can't reproduce this error conveniently. https://github.com/koordinator-sh/koordinator/blob/main/pkg/koordlet/resmanager/cpu_suppress.go#L78

Now I can reproduce only in race condition, I have no idea to write a test for it. help!

[jasonliu747]

Hi @j4ckstraw, please rebase to the latest code. Codecov won't be a problem anymore, we can merge this PR then.

[jasonliu747]

@j4ckstraw have you joined our DingTalk or WeChat group? I would like to discuss further cooperation with you~

[jasonliu747]

/lgtm

[j4ckstraw]

@j4ckstraw have you joined our DingTalk or WeChat group? I would like to discuss further cooperation with you~

Not yet, It would be my pleasure.

[jasonliu747]

Not yet, It would be my pleasure.

Nice! You can find our DingTalk QR Code in README

[j4ckstraw]

Not yet, It would be my pleasure.

Nice! You can find our DingTalk QR Code in README
Got it, I have joined in it.

[hormes]

/approve

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